Anyone have old Silhouette OMA files (specifically shape 6545)?

[DanLiv]

Anyone have a collection of old OMA files from Silhouette that include legacy shapes? I need shape 6545 (eyesize 53, though I can make any work). No longer on silhouettelab.com and Silhouette has no patterns. If anyone happens to have a file of this and can email it to me that would be awesome! Of course I can just have my lab drill it, but it's worth a bit of legwork to try to do it myself. Alternatively, if not a Silhouette OMA, maybe someone has a Santinelli compatible PTN file they made themselves? Either works for me. Thanks!

[Barry Santini]

Anyone have a collection of old OMA files from Silhouette that include legacy shapes? I need shape 6545 (eyesize 53, though I can make any work). No longer on silhouettelab.com and Silhouette has no patterns. If anyone happens to have a file of this and can email it to me that would be awesome! Of course I can just have my lab drill it, but it's worth a bit of legwork to try to do it myself. Alternatively, if not a Silhouette OMA, maybe someone has a Santinelli compatible PTN file they made themselves? Either works for me. Thanks!

i'll look tomorrow. No doubt I have the pattern.

B

[jspayneii]

I have the tracing for the 6545 in the 51 eye. PM me your address, and I will send it to you.

James

[scriptfiller]

I have a trace file for that shape from a NOP 4T if that's what you are looking for

[MakeOptics]

This will be a multi part post your patience will result in the trace you need.

Creating a Tracing from Thin Air.

1. Google search for a image of the frame shape you need. Important to get an image of the frame front perpendicular to the frame, see image below.
2. Print image out larger than the actual lens size. Image will be reduced in size using software and any anomalies when cutting out the lens shape will be corrected by scaling down.
3. Cut out lens shape. Use your best kindergarten skills here.
4. Block up the cutout like you would a pattern.
5. Trace the cutout and send it to your lab management software. Your choices will vary I have used innovations in the past which will allow shape modification, essibox has this function as well (used in images), and national optronics has the trace editor (which can simplify the process with their scan tool, tangent but can be discussed if interested later).

[EyeCare Rich]

Interesting they have the drill chart for it, but not the OMA file. Did you call silhouette to see if they have an archive they could email you?

[MakeOptics]

6. Scale the image down to the A and B dimension that the lens specifies using a homeopathic function.
7. Clean up your cutout tracing in your software if it allows. IN this step I took a few jagged edges off which came from cutting with scissors.
8. Use software to find the scale factor in this case the image had a B dimension of 75px and real life B dimension of 33mm.
9. Find the temporal height of the drill holes, and convert to mm. 45px, 75 * x = 33 * 45, 20mm or 3.5up
10. Find the nasal height of drill holes, and convert to mm. 52px, 75 * x = 33 * 52, 23mm or 6.5up

[MakeOptics]

11. Set your drill holes, silhouettes have the drill holes 2mm from the edge and 3mm apart which I have set the holes are round and 1.4mm wide.

Attached int he zip file is the trace which includes drill coordinates, it's using the newest OMA file verison which might cause you issues, if it doesn't work download and use the zip file marked 2. Enjoy, I hope you learned something.

[MakeOptics]

National Optronics has a drill editor program that allows hook up to a scanner and will accept a scanned image and convert it to a tracing which can further be modified int he software. I have tried to crack their software for a little time now but don't have the time quite frankly with other projects in my lap, it may be worth purchasing if I did not despise E.

[DanLiv]

Interesting they have the drill chart for it, but not the OMA file. Did you call silhouette to see if they have an archive they could email you?

Yes I have the drill chart, and I did call they keep no record of "legacy" shapes. This isn't a tough situation, I can trace the customer's own existing shape fine and use the drill coordinates. I just don't have the customer's frame here to trace and through if someone did have the file it's a simple email attachment, plug it in, and edge! I can make custom shapes if need be, but it's harder to exactly duplicate and existing shape with MakeOptics' method with enough accuracy to maintain the precision of digital measurements for a freeform progressive.

[jspayneii]

It didn't occur to me to post it to the thread... Thanks Make for the idea. Here is the tracing from our database for the 6545. You just need to add the drill points.

James

[MakeOptics]

Yes I have the drill chart, and I did call they keep no record of "legacy" shapes. This isn't a tough situation, I can trace the customer's own existing shape fine and use the drill coordinates. I just don't have the customer's frame here to trace and through if someone did have the file it's a simple email attachment, plug it in, and edge! I can make custom shapes if need be, but it's harder to exactly duplicate and existing shape with MakeOptics' method with enough accuracy to maintain the precision of digital measurements for a freeform progressive.

You would be amazed how accurately you can get with this method, I have traced and replaced one lens with this method with success. It is a shame they don't keep older shapes, as far as I know they don't have an expiration date.